Analysis

  • max time kernel
    103s
  • max time network
    104s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05-11-2024 10:09

General

  • Target

    1b7a433a9c38aeafd602658c9d08b16da9cb5d7c41bc193ddb0d62dc7cb3ed13N.exe

  • Size

    639KB

  • MD5

    f0bff70472a4eb96a3906731c4b88bf0

  • SHA1

    af1941df703d141e9166c91d83ee848ca2cd78b7

  • SHA256

    1b7a433a9c38aeafd602658c9d08b16da9cb5d7c41bc193ddb0d62dc7cb3ed13

  • SHA512

    66c731b7d14379e6c1310368ed30c935695870612e48bd212d7afdfbc997e3b517c25a5f6ac558ebe5c3b78b32105208c85e49834bb9e0473a9e3c484c664cba

  • SSDEEP

    6144:Y9evm9HS2zB5jL5WYWgrm/PTeEZwmsJUGI6hB4cQ1S:Q9HnB5P5ZWgM7RbsJhI6kcQ1S

Malware Config

Signatures

  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Neshta family
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Modifies registry class 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\1b7a433a9c38aeafd602658c9d08b16da9cb5d7c41bc193ddb0d62dc7cb3ed13N.exe
    "C:\Users\Admin\AppData\Local\Temp\1b7a433a9c38aeafd602658c9d08b16da9cb5d7c41bc193ddb0d62dc7cb3ed13N.exe"
    1⤵
    • Checks computer location settings
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1584
    • C:\Users\Admin\AppData\Local\Temp\3582-490\1b7a433a9c38aeafd602658c9d08b16da9cb5d7c41bc193ddb0d62dc7cb3ed13N.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\1b7a433a9c38aeafd602658c9d08b16da9cb5d7c41bc193ddb0d62dc7cb3ed13N.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2452

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\PROGRA~2\Adobe\ACROBA~1\Reader\ACROTE~1.EXE

    Filesize

    86KB

    MD5

    1d04fe9097d26be287b3ec0e3adb3ec8

    SHA1

    c0081fe0e4db05a49ac67d18fe8c80c8cfe56c37

    SHA256

    a7a76af243d84c7725044ba5d10228f8ad445da7bbacf9f3708e8466fa8286c2

    SHA512

    96b2c95e16f1d4314b2d42b65837c4ed69549494e4dea9330c102e67db3f9154616dab0836da0c8bd4a11b75649919d83c6d7f50e535f6fc68abcbaa0e81d1b1

  • C:\Users\Admin\AppData\Local\Temp\3582-490\1b7a433a9c38aeafd602658c9d08b16da9cb5d7c41bc193ddb0d62dc7cb3ed13N.exe

    Filesize

    599KB

    MD5

    e50751d0f005b47b8b783ba71a00b9ef

    SHA1

    156865c804eccac0738441532275c980a197b2ba

    SHA256

    3c147ee21089ab5819227bc8c15123ed3d51800a91d5bc7bae988e9c522d4c4d

    SHA512

    d011f5082842a8207d8a02f730c5bbfea82b823d9a3e815b669e80c7a4efe6746320d4ad4599073b3a541002ed627965dfd3eaa2e36fc559b283ce5531b23790

  • memory/1584-95-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/1584-96-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB

  • memory/1584-98-0x0000000000400000-0x000000000041C000-memory.dmp

    Filesize

    112KB